My brother came to a Dessert Party with us when he joined us for my 50th birthday trip. He went to Guest Services when we arrived in the park that morning and told them he was diabetic. All we had to do was notify the CMs on check in at the party that he was diabetic and gave them his name, and they brought him a special platter. My brother is quite naughty, though, and still ate a few of the desserts on offer. But the point is, if they know you have special dietary needs, they'll bring something special. My daughter went through a 3-year period of being quite lactose intolerant and they brought her a special platter even though she was still able to eat a fair bit of what was on offer. I think she had more to eat that I did!!